Research on Reasonable Width of Coal Pillars in High Strength Mining Roadway in Wantugou Mine
Sign Up to like & getrecommendations! Published in 2020 at "Geotechnical and Geological Engineering"
DOI: 10.1007/s10706-020-01607-9
Abstract: Reasonable coal pillar size is a necessary condition for high strength and safe mining of coal face with double roadway arrangement. On the basis of the lack of theory of coal pillar retention between alleys… read more here.
Keywords: coal pillar; high strength; roadway; coal pillars ... See more keywords
Abutment pressure distribution pattern and size optimization of coal pillar under repeated mining: a case study
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-020-06281-y
Abstract: Abutment pressure distribution is the decisive factor affecting the stability of coal pillars, which has an important significance in realizing safe and efficient mining. In recent years, many working faces adopting double-roadway arrangement have appeared… read more here.
Keywords: coal pillar; abutment pressure; mining; coal ... See more keywords
A study of surface subsidence and coal pillar safety for strip mining in a deep mine
Sign Up to like & getrecommendations! Published in 2018 at "Environmental Earth Sciences"
DOI: 10.1007/s12665-018-7810-y
Abstract: Some villages and bridges are located on the ground surface of the working district no. 7 in the Wanglou Coal Mine. If longwall mining is adopted, the maximum deformation of the ground surface will exceed… read more here.
Keywords: coal pillar; coal; mining; surface subsidence ... See more keywords
Coal pillar mechanics of violent failure in U.S. Mines
Sign Up to like & getrecommendations! Published in 2017 at "International journal of mining science and technology"
DOI: 10.1016/j.ijmst.2017.03.001
Abstract: Abstract This paper seeks to enhance the understanding that the horizontal stresses build up and release during coal pillar loading and unloading (post-failure) drawing upon three decades of observations, geomechanical monitoring and numerical modeling in… read more here.
Keywords: coal pillar; violent failure; stress; coal ... See more keywords
Determination of pillar width to improve mining safety in a deep burst-prone coal mine
Sign Up to like & getrecommendations! Published in 2019 at "Safety Science"
DOI: 10.1016/j.ssci.2018.12.003
Abstract: Abstract Coal burst is the main threat to coal mining safety in China. Coal pillars of appropriate width play a significant role in controlling stress distribution and coal burst hazard. In the latest National Coal… read more here.
Keywords: burst; pillar design; coal; safety ... See more keywords
Damage and Failure Evolution Mechanism for Coal Pillar Dams Affected by Water Immersion in Underground Reservoirs
Sign Up to like & getrecommendations! Published in 2019 at "Geofluids"
DOI: 10.1155/2019/2985691
Abstract: In coal mines, underground reservoir systems can increase the availability of water and are an effective technical approach for the protection and utilization of water resources. The stability of coal pillar dams is the key… read more here.
Keywords: coal pillar; coal; water immersion; pillar dams ... See more keywords
Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining
Sign Up to like & getrecommendations! Published in 2020 at "Shock and Vibration"
DOI: 10.1155/2020/8824323
Abstract: The practice shows that deep strip mining induces rockburst disaster easily. Accurately evaluating rockburst risk of the strip coal pillar is of great significance for ensuring the safety of deep strip mining. In this paper,… read more here.
Keywords: coal pillar; mining; strip; strip mining ... See more keywords
Design of Longwall Coal Pillar for the Prevention of Water Inrush from the Seam Floor with Through Fault
Sign Up to like & getrecommendations! Published in 2021 at "Geofluids"
DOI: 10.1155/2021/5536235
Abstract: Setting up a waterproof coal pillar is an important measure to prevent water inrush from the Weibei mining through fault floor. Based on the plastic slip line field theory, a mechanical model of floor water… read more here.
Keywords: coal pillar; fault; water inrush; water ... See more keywords
Critical Height of Unfilled Zone in Underlying Gob Piles
Sign Up to like & getrecommendations! Published in 2021 at "Shock and Vibration"
DOI: 10.1155/2021/6634295
Abstract: To address problems associated with mining above gob piles in the Chinese midwest mining area, a mechanic model for a coal pillar was established based on the displacement variation method. Additionally, the effect of critical… read more here.
Keywords: coal pillar; underlying gob; unfilled zone; gob piles ... See more keywords
Dynamic Behavior of Coal Pillar under Different Load Percentage by Numerical Simulation
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Civil Engineering"
DOI: 10.1155/2021/6697507
Abstract: The stability and dynamic response of coal pillar is of great importance in underground coal mining. In this paper, a series of uniaxial compressive experiments were first carried out to investigate the mechanical properties of… read more here.
Keywords: coal pillar; numerical simulation; load percentage; coal ... See more keywords
Research on the Reasonable Coal Pillar Width and Surrounding Rock Supporting Optimization of Gob-Side Entry under Inclined Seam Condition
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Civil Engineering"
DOI: 10.1155/2021/7145821
Abstract: In order to study the optimal coal pillar width and surrounding rock control mechanism of gob-side entry under inclined seam condition, the 130205 return air entry adjacent to 130203 gob in Yangchangwan No. 1 well… read more here.
Keywords: coal pillar; gob side; surrounding rock; entry ... See more keywords